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ANALYTE <br />1,1-Dichloro- <br />Trichloro- <br />Sequoia <br />ID <br />Analytical <br />680 Chesapeake Drive Redwood City, CA 94063 <br />404 N. VVISet Lane Walnut Creek, CA 94598 <br />819 Striker Avenue, Suite 8 Sacramento, CA 95834 <br />1455 McDowell Blvd. North, Ste. D Petaluma, CA 94954 <br />650) 364-%00 FAX (650) 364-9233 <br />(925) 988-9600 FAX (925) 988-9673 <br />(916) 921-9600 FAX (916) 921-0100 <br />(707) 792-1865 FAX (707) 792-0342 <br />Gettler-Ryan - Dublin <br />Client Project ID: Chevron #9-3232, Stockton <br />Method: <br />6747 Sierra Court, Suite J <br />Matrix: Solid <br />EPA 8010 EPA 8082 <br />Dublin, CA 94568 <br />P. Kosovskaya <br />P. Kosovskaya <br />Attention: Greg Gurss <br />QC Sample Group: 9031116-129 <br />Reported: Mar 16, 19! <br />ANALYTE <br />1,1-Dichloro- <br />Trichloro- <br />Chloro- Aroclor 1260 <br />Date Prepared: <br />ethene <br />ethene <br />benzene <br />Method: <br />EPA 8010 <br />EPA 8010 <br />EPA 8010 EPA 8082 <br />Analyst: <br />P. Kosovskaya <br />P. Kosovskaya <br />P. Kosovskaya Star Analytical <br />MS/MSD <br />LCS031299 <br />LCS031299 <br />LCS031299 <br />Date Prepared: <br />Batch#: <br />9030166 <br />9030166 <br />9030166 <br />03V9286 <br />Date Prepared: <br />3/11/99 <br />3/11/99 <br />3/11/99 <br />3/14/99 <br />Date Analyzed: <br />3/11/99 <br />3/11/99 <br />3/11/99 <br />3/15/99 <br />Instrument I.D.#: <br />HP -6 <br />HP -6 <br />HP -6 <br />0 <br />Conc. Spiked: <br />1000 pg/kg <br />1000 pg/kg <br />10001ig/kg <br />67 pg/kg <br />Matrix Spike <br />% Recovery: <br />150 <br />170 <br />160 <br />69 <br />Matrix Spike <br />Duplicate % <br />Recovery: <br />140 <br />160 <br />140 <br />82 <br />Relative % <br />Difference: <br />6.9 <br />6.1 <br />13 <br />17 <br />LCS Batch#: <br />LCS031299 <br />LCS031299 <br />LCS031299 <br />Date Prepared: <br />3/12/99 <br />3/12/99 <br />3/12/99 <br />Date Analyzed: <br />3/12/99 <br />3/12/99 <br />3/12/99 <br />Instrument I.D.#: <br />HP -6 <br />HP -6 <br />HP -6 <br />LCS % <br />Recovery: <br />120 <br />130 <br />130 <br />% Recovery <br />Control Limits: 65-135 70-130 70-130 50-150 <br />SEQUOIA ANALYTICAL, #1271 <br />& #1894 <br />?Iianne Fegley <br />Project Manager <br />Please Note: <br />The LCS is a control sample of known, interferent free matrix that is analyzed using the same reagents, <br />preparation, and analytical methods employed for the samples. The matrix spike is an aliquot of sample <br />fortified with known quantities of specific compounds and subjected to the entire analytical procedure. If <br />the recovery of analytes from the matrix spike does not fall within specified control limits due to matrix <br />interference, the LCS recove is to be used to validate the batch. <br />9031116.GET <33> <br />